component

HG811TM4

Public Made by Adom

by adom

HGSEMI Supervisor and Reset ICs, SOT-143-4. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs hg811tm4: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
hg811tm4-etched.fit.json hg811tm4: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
hg811tm4-etched.glb hg811tm4: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
hg811tm4-etched.step hg811tm4: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
hg811tm4.glb Publish 0.1.0 · Ray
hg811tm4.kicad_mod Publish 0.1.0 · Ray
hg811tm4.kicad_sym Publish 0.1.0 · Ray
hg811tm4.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
hg811tm4.step Publish 0.1.0 · Ray
package.json Publish 0.2.0 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json hg811tm4: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray
README.md hg811tm4: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

HG811TM4

HGSEMI · Supervisor and Reset ICs · SOT-143-4

HG811TM4 from HGSEMI, in a SOT-143-4. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 GND power_in Ground / negative supply return.
2 VRESET output Active-low reset output. Pulled low when VCC drops below the threshold Vth (3.08 V typ for HG811TM4) or when MR is asserted low; returns high after the Trp reset delay (500 ms typical). VOL ≤ 0.5 V at ISINK = 3.2 mA; VOH ≥ 0.8·VCC at ISOURCE = 500 µA.
3 MR input Manual reset / enable input, active low. Driving MR low forces VRESET low; releasing MR high starts the Trp reset delay. VIH ≥ 0.7·VCC, VIL ≤ 0.2·VCC. Minimum pulse width tMR = 10 µs.
4 VCC power_in Positive supply and monitored voltage input. Operating range 1.0 V to 6.0 V (absolute max 6.5 V). Quiescent current ICCH ≈ 1 µA typ, 5 µA max at VCC = 6 V with MR high.

Key specifications

Parameter Value
Manufacturer HGSEMI
Package SOT-143-4
Category PMIC
Pins 4

Ordering variants

Same part, different packaging or reel option.

  • HG811TM4/TR

CAD (KiCad official)

  • Symbol: HG811TM4
  • Footprint: Package_TO_SOT_SMD:SOT-143
  • 3D model: SOT-143-4 (KiCad packages3D, STEP)
  • 3D model files: hg811tm4-etched.step / hg811tm4-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); hg811tm4.step / hg811tm4.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
hg811tm4.step 75 KB You want the bare part, or you mark your own boards.
hg811tm4-etched.step 1.3 MB You want the part with HG811TM4 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 343 faces against 87 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: HGSEMI datasheet (7 pp, sha256 a75fd3d5b03be350, retrieved 2026-08-17, tier: lcsc)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF